Sole-leveling machine.



G. L. PARKER.

' SOLE LEVELING MACHINE. APPLICATION FILED MAR. 29, 1912.

- 1,082,761. Patented Dec. 30, 1913.

COLUMBIAYPLANOGRAPH (20., WASHINGTON. D. c.

pnrrsn srxrrns PATENT OFFICE.

CHANDLER L. PARKER, OF LYNN, MASSACHUSETTS, ASSIG-NOR T0 UNITED SHOE MACHINERY COMPANY, IPATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ISOLE-LEVELING MACHINE.

Specification of Letters Patent.

Application filed March 29, 1912.

Patented Dec. 30, 1913. Serial No. 687,124.

To all whom it may concern:

Be it known that I, CHANDLER L. PARKER, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sole-Leveling Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to machines for operating upon boot and shoe soles, and more particularly to a machine of this type which comprises a shoe supporting jack and a cooperating sole leveling device which are movable to change the' relative longitudinal position of the leveling device and jack.

In beating out or leveling the soles of turn shoes, it is often considerd desirable to exert both a'rolling and a rubbin action upon the sole to smooth out all ridges and protuberances in the surface and cause the sole to conform substantially to the contour of the last. In the preferred mode of operation, the sole is subjected first to a light rubbing action in order to smooth and even out the upstanding ridges in the surface and is thereafter subjected to a heavier rolling pressure to shape it to the contour of the last.

The object of the present invention is to provide an improved machine of the character described which performs in a simple and efficient manner all of the operations necessary for the proper leveling of the sole of a turn shoe.

With this object in view, one feature of the invention consists in the combination with a shoe supporting jack and a cooperating leveling device, of means under the control of the operator for varying the pressure of the leveling device upon the sole, and mechanism connected to the control means for causing the leveling device to exert both a light rubbing action and a heavier rolling pressure upon the surface of the sole.

A further feature of the invention consists in the combination witha shoe supporting jack and a cooperating leveling roll, 0 means for retarding the free rotation of the roll, and means under the control of the operator for automatically varying the retarding effect upon the roll.

Still further features of the invention consist in certain novel features of construction, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

In the accompanying drawing illustrating the preferred form of the invention; Figure 1 represents a side elevation of a leveling machine embodying the several features of the invention in their preferred form; Fig. 2 is a detail illustrating an end elevation of the leveling roll and brake applied thereto; and Fig. 3 is a view similar to Fig. 1 showing a front'elevation of the leveling roll and brake.

The machine shown in the illustrated embodiment of the invention comprises a leveling roll 1 and a cooperating shoe supporting jack 2 which are movable to change the relative longitudinal position of the roll and jack. The jack 2 is manipulated by a handle 3 and is pivoted to swing laterally in the jack carrier 4 pivoted upon the frame of the machine at 5. The jack carrier is oscillated to move the shoe longitudinally beneath the leveling roll by a crank 6 and a connecting rod 7. The crank 6 is actuated by a large friction disk 8 rotated alternately in opposite directions by a pair of small driving disks engaging with the periphery of the driven disk at diametrically opposite points. The driving disks are continuously rotated from a belt 9 and are journaled upon a frame 10 which is swung to engage either of the driving disks with the driven disk 8 by a controlling handle 11. The leveling roll is journaled in a roll carrier 12 and is yieldingly pressed against the sole by a treadle 13 which is connected with the roll carrier by means of a yielding connection indicated at 14. The above described construction is substantially the same as that shown and described in the U. S. patent to Eppler, 996,707, dated July 4, 1911, and in consequence has been only briefly described herein.

Owing to the character and the methods of manufacture of turn shoes, the soles oftentimes have upstanding ridges or bunches, or both, which'must be smoothed out and removed in order to impart the desired finish to the shoe sole. The leveling roll of the machine is conveniently utilized to impart both a rubbing and rolling action to the sole by the employment of a friction brake which retards the free rotation of the roll. In the present invention, the amount of frictional engagement between the brake and roll, or retarding effect as it may be termed, is varied at the will of the operator to exert different degrees of rubbing action upon thesole. In the simplest and most efficient form of the invention which has yet been devised, connections are provided between the treadle and roll for varying the retarding effect upon the roll inversely as the pressure of the roll upon the shoe.

In the present machine, the leveling roll is provided with a smooth periphery and is journaled in across head 15 slidingly supported in ways formed in the roll carrier 12. The slide is reciprocated rapidly in the roll carrier to impart a vibratory motion to the roll by an eccentric 16 and connecting mechanism indicated at 17. The rotation of the roll is retarded by a friction brake 2O pivotally supported upon the outer end of a lever .21 and arranged to engage with the periphery of the leveling roll 1 when de sired. In order that the brake and roll shall be vibrated in unison, the lever 21 is pivotally connected at 22 to a bracket- 23 which is rigidly attached to the slide 15. In order to press the brake 20 against the roll, the inner end of the arm 21 extends into close proximity to the treadle rod 27 and a spring 24 surrounds the rod and is interposed between the lever 21 and a casing 25 which forms a part of the treadle connection. In order to allow a vibratory movement of the lever 21 relative to the rod 27 without affecting the operative connection, the inner end of the lever is provided with a forked portion embracing the rod 27, as indicated in Fig. 1. In order to vary the compression of the spring 24, the lower end of the spring is seated upon an adjusting member 26 which is threaded in the upper end of the casing 25. With this arrangement, when the treadle 13 is depressed to cause the roll to bear upon the shoe sole with a considerable pressure, the spring 14 is compressed moving the casing 25 relative to the treadle rod'and allowing the spring 24 to expand and release the brake. As the treadle is elevated, however, during the continuous operation of the machine the brake is gradually applied until the rotation of the roll is greatly retarded or entirely stopped, the pressure of the roll upon the shoe in the meanwhile having been diminished until the roll bears upon the shoe with a comparatively light pressure.

The preferred mode of operation of the machine is as follows :The shoe is first positioned upon the jack in the usual manner, and the controlling handle is then manipulated to cause the jack to oscillate longitudinally beneath the leveling roll. The roll is first traversed over the shoe sole with a comparatively light pressure and is caused to operate as a rub stick to smooth out the surface of the sole, the jack meanwhile being swung laterally under the control of the operator to cause the roll to contact with any desired portion of the sole transversely. After the sole has been thoroughly'smoothed out and all of the ridges and projections have been removed, the treadle is depressed to cause the roll to exert a heavier pressure upon the sole and the shoe is then leveled with a rolling pressure-to bed it down upon the last and cause it to conform substantially to the contour of the last While it is preferred to employ the specific construction and arrangement of parts shown and described, it will be understood that this construction and arrangement is not essential except so far as specified in the claims, and may be changed or modified without departing from the broader features of the invention.

The invention having been described, what is claimed is 1. A machine for leveling the soles of boots a-nd shoes, having, in combination, a shoe supporting jack, a leveling roll, means for changing the relative longitudinal position of the roll and jack, means for retarding the free rotation of the roll, and means under the control of the operator for varying the retarding effect upon the roll during operation of the machine, substantially as described.

2. A machine for leveling the soles of boots and shoes, having, in combination, a shoe supporting jack, a leveling roll, means for changing the relative longitudinal position of the roll and jack, means for retarding the free rotation of the :roll, and means for varying the retarding effect inversely as the pressure of the roll upon the shoe, substantially as described.

3. A machine for leveling the soles of boots and shoes, having, in combination, a shoe supporting jack, 'a leveling device,

means under the control of the operator to vary the pressure upon a shoe sole, and mechanism connected to the control means for causing the leveling device to exert a light rubbing action and a heavier rolling pressure upon the surface of :the sole, substantially as described. 7

4. A machine for leveling the soles of boots and shoes, having, in combination, a

the treadle is moved in the opposite direction, substantially as described.

5.A machine for leveling the soles of boots and shoes having, in combination, a shoe supporting jack, a vibratory leveling roll, means for changing the relative longitudinal position of the roll and jack, a brake arranged to vibrate with the roll, a treadle, connections between the treadle and roll to vary the pressure of the roll upon the shoe, and connections between the treadle and brake to vary the retarding effect upon the roll, substantially as described.

6. A machine for leveling the soles of boots and shoes comprising a leveling roll, a treadle connected to the roll and arranged to vary the pressure of the roll upon the shoe, a friction brake arranged to retard the rotation of the roll, and a spring operatively connected to the brake and arranged to apply and release the brake upon movements of the treadle in opposite directions, substantially as described.

7. A machine for leveling the soles of boots and shoes comprising a leveling roll, a treadle connected to the roll and arranged to vary the pressure of the roll upon the shoe, a friction brake arranged to retard the rotation of the roll, a spring operatively connected to the brake and arranged to apply and release the brake upon movements of the treadle in opposite directions, and means for adjusting the initial compression of the spring, substantially as described.

CHANDLER L. PARKER.

Witnesses:

JAMES ENos SPONAGLE, RUFUS ARTHUR TREMAIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

